[MRCA] Racal 6217 info request

[Al Klase]

Jeep,

Terry O has an RA6217E manual here:
http://www.blackradios.terryo.org/documents/manufacturers/Racal/manuals/Racal-R-1555-(RA6217E)-manual.pdf

Al

ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
On 10/22/2022 10:02 AM, Doran Platt wrote:
> I am trying to fix up one of these Racal receivers. It "works" but has 
> an MDS of between 10uv and 30uv.  I say it works as I can hear signals 
> throughout the bands.  I notice that the pre-selector has unity gain 
> and is very narrow. Is that correct?  Using a headset I can hear the 
> signals. No go with the correct Z speaker. If I place a receiver 
> pre-amp in the antenna line (e.g. Ameco PC-series), things perk up 
> quite well and it appears almost "normal", although there iare no 
> S-meter readings until the signals are very strong.  Again, using the 
> pre-amap and phones.
> I'd like to fine a schematic to have a look at the front end. I 
> hesitate to tweak anything in the dark. Things like internal IF and RF 
> gain, and S-meter adjust, if such exist inn the receiver.  Any leads 
> on a book, too. Hate to have broken things laying about.... hi!!
> Jeep K3HVG
>
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